high
7.2
CWE
78 77 20
Advisory Published
Updated

CVE-2020-3207: Cisco IOS XE Software Command Injection Vulnerability

First published: Wed Jun 03 2020(Updated: )

A vulnerability in the processing of boot options of specific Cisco IOS XE Software switches could allow an authenticated, local attacker with root shell access to the underlying operating system (OS) to conduct a command injection attack during device boot. This vulnerability is due to insufficient input validation checks while processing boot options. An attacker could exploit this vulnerability by modifying device boot options to execute attacker-provided code. A successful exploit may allow an attacker to bypass the Secure Boot process and execute malicious code on an affected device with root-level privileges.

Credit: ykramarz@cisco.com

Affected SoftwareAffected VersionHow to fix
Cisco IOS XE=16.9.2
Cisco IOS XE=16.9.2a
Cisco IOS XE=16.9.2s
Cisco IOS XE=16.9.3
Cisco IOS XE=16.9.3a
Cisco IOS XE=16.9.3h
Cisco IOS XE=16.9.3s
Cisco IOS XE=16.9.4
Cisco IOS XE=16.10.1
Cisco IOS XE=16.10.1e
Cisco IOS XE=16.10.1s
Cisco IOS XE=16.11.1
Cisco IOS XE=16.11.1a
Cisco IOS XE=16.11.1b
Cisco IOS XE=16.11.1c
Cisco IOS XE=16.11.1s
Cisco IOS XE=16.12.1
Cisco IOS XE=16.12.1c
Cisco IOS XE=16.12.1s
Cisco Catalyst 3650-12x48UQ
Cisco Catalyst 3650-12X48UR
Cisco Catalyst 3650
Cisco Catalyst 3650
Cisco Catalyst 3650
Cisco Catalyst 3650
Cisco Catalyst 3650
Cisco Catalyst 3650-8X24UQ
Cisco Catalyst 3850-24XS
Cisco Catalyst 3850-48XS
Cisco Catalyst 3850
Cisco Catalyst 3850
Cisco Catalyst C9200
Cisco Catalyst 9200 Series
Cisco Catalyst C9200
Cisco Catalyst 9200 Series
Cisco Catalyst C9200L-24P-4G
Cisco Catalyst C9200L-24P-4X
Cisco Catalyst C9200L-24PXG-2Y
Cisco Catalyst C9200L-24PXG-4X
Cisco Catalyst C9200L-24T-4G
Cisco Catalyst C9200L-24T-4X
Cisco Catalyst C9200L-48P-4G
Cisco Catalyst C9200L-48P-4X
Cisco Catalyst C9200L-24PXG-2Y
Cisco Catalyst C9200L-48PXG-4X
Cisco Catalyst C9200L-48T-4G
Cisco Catalyst C9200L-48T-4X
Cisco Catalyst C9300-24P
Cisco Catalyst C9300
Cisco Catalyst 9300-24T-A
Cisco Catalyst C9300-24U
Cisco Catalyst 9300-24UX
Cisco Catalyst C9300-48P
Cisco Catalyst C9300
Cisco Catalyst C9300
Cisco Catalyst 9300-48U
Cisco Catalyst C9300 Series
Cisco Catalyst C9300-48UXM
Cisco Catalyst C9300
Cisco Catalyst C9300L-24P-4X
Cisco Catalyst 9300L-24T-4G
Cisco Catalyst 9300
Cisco Catalyst C9300L-48P-4G
Cisco Catalyst 9300 Series Switches
Cisco Catalyst C9300
Cisco Catalyst C9300L-48T-4X
Cisco Catalyst 9500
Cisco Catalyst 9500
Cisco Catalyst 9500
Cisco Catalyst C9500-24Y4C
Cisco Catalyst 9500
Cisco Catalyst C9500-32QC
Cisco Catalyst C9500-40x
Cisco Catalyst C9500-48Y4C

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2020-3207?

    CVE-2020-3207 has a severity rating of medium based on its potential for command injection by an authenticated local attacker.

  • How do I fix CVE-2020-3207?

    To fix CVE-2020-3207, apply the relevant software updates or patches provided by Cisco for affected IOS XE versions.

  • Which Cisco versions are affected by CVE-2020-3207?

    CVE-2020-3207 affects specific versions of Cisco IOS XE software such as 16.9.2 through 16.12.1.

  • Can CVE-2020-3207 be exploited remotely?

    No, CVE-2020-3207 requires local access to the device for exploitation.

  • What type of attack does CVE-2020-3207 allow?

    CVE-2020-3207 allows for command injection attacks during the device boot process if exploited.

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